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OpenML with nVidia Swap Group OpenGL extension

Hi.
I am trying to figure out if OpenML is suitable for my task.
Basically I have to synch video with audio, but on several machines at once.
Has anyone ever tried this with OpenML ?
I use nVidia's WGL_NV_swap_group extension to synch buffer swaps (OpenGL) across several machines.
The extension works as follows : if one machine is ready to swap backbuffer but the other machines are not,
the OpenGL SwapBuffers() will block until the other machines are ready toswap buffers too.
Can OpenML synch the audio to the buffer swaps ? i.e if the buffer swap blocks because it's waiting for
other machines to be ready to do buffer swap, would the audio block too ?